1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.log4j.util;
19
20 import org.apache.oro.text.perl.Perl5Util;
21
22 public class ControlFilter implements Filter {
23
24 Perl5Util util = new Perl5Util();
25
26 String[] allowedPatterns;
27
28 public ControlFilter(String[] allowedPatterns) {
29 this.allowedPatterns = allowedPatterns;
30 }
31
32 public
33 String filter(String in) throws UnexpectedFormatException{
34 int len = allowedPatterns.length;
35 for(int i = 0; i < len; i++) {
36 //System.out.println("["+allowedPatterns[i]+"]");
37 if(util.match("/"+allowedPatterns[i]+"/", in)) {
38 //System.out.println("["+in+"] matched ["+allowedPatterns[i]);
39 return in;
40 }
41 }
42
43 throw new UnexpectedFormatException("["+in+"]");
44 }
45 }